Nitrogen is made available in a useful form for animals in the A. fertilizers they absorb. B. plants they eat. C. air they breathe. D. rainwater they drink.

What does burning fossil fuels have on the atmosphere

An unknown cell is placed in an unknown solution. the cell ends up swelling and then lysing, explodes. which type of solution was this cell placed in? draw your own example of this below.

Chordae tendineae are found in the A. auricles. B. ventricles. C. atria. D. aorta.

What does it mean when we say DNA replication is semiconservative

Which statement best describes the limits of science? A. Science can answer only mathematical questions. O O B. Science can answer all questions. O C. Science cannot answer difficult questions. O D. Science cannot answer philosophical questions.

Heart disease is the leading cause of death among both men and women in the United States. It is usually caused when a sticky substance called plaque builds up in the arteries. Often, the only symptoms of heart disease are chest pain or discomfort.

Is the following sentence true or false? Weather is the average condition of the atmosphere in a particular place over a period of many years

How many cells make up a unicellular organism? one two three more than three

The cell membrane has many proteins embedded in it. These proteins have many different functions ranging from transport of materials to cell surface identity markers. True False

The secretions of the gallbladder, liver, and pancreas enter the